Siemens Simatic S7-300 - Inserting Slot Numbers in Modules

Installation
S7-300 Programmable Controller Hardware and Installation
5-10 A5E00105492-01
Inserting slot numbers
1. Hold the corresponding slot number in front of the respective module.
2. Insert the pin into the opening on the module (1).
3. Press the slot number into the module (2). The slot number breaks off from the
wheel.
The figure below illustrates this procedure. The slot number labels are included
with the CPU.
1
2
Figure 5-3 Inserting slot numbers in modules